Thread-cutting temple for looms



Sept. 14- 1925.

M. L. STONE THREAD CUTTING TEMPLE FOR LO OMS iled April 50, 1926 I lnve nTor.

5 Mehzin L. STone byJMMkM Afiy s Patented Sept. 14, 1926.

' UNITED STATES 1,600,147 PATENT OFFICE.

MELVIN swoa r LAwnENoE, MASSACHUSETTS, AssIeNoR To DEA-PER CORPORA- TION, oE HOPEDALE, MAsSAoHUSE'r'rS, A CORPORATION or MAINE.

THREAD-CUTTING TEMPLE Eon Looms.

Application filed April 30, 1926. Serial No. 105,693.

This invention relates to a thread cutting temple for looms such as generally employed for cutting filling ends left extending at the selvage of the cloth being woven.

lVhen a loom provided with the ordinary type of thread cutting temple is stopped and the operative pieces a warp or filling end, or

makes some adjustment or repair, he is very apt to move the lay back and forth and as 1 the lay, when moved forwardly to a sufiicient extent, operates the temple thread cutter, it not infrequently happens that the running filling is accidentally cut. When the operative starts the loom, he usually has his hand on the shipper lever and does not notice the indication of the weft fork and thus the loom starts weaving with a mispick resulting from the severed filling.

The object of the present invention is to provide means for preventing the cutting mechanism from functioning when the loom is thus stopped, but which will not interfere with the normal cutting operation when the loom is running. In carrying out this broad object, the present invention is subsidiary to the inventiondisclosed in my application No. 105,692 for thread cutting temple filed concurrently herewith.

The object of the invention is further to provide means acting upon the stopping of the 100m to move the usual movable cutter member forwardly to a position where it will be prevented from engaging the filling, to hold it in such position until the loom is started and then to restore it to operative position, permitting it to function normally.

These and other objects and features of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

As the general construction and'op'eration of thread cutting temples and of the loom mechanism of various types is well known.

'I ig. 2. "ment is swung 1n the opposite direction.

the parts shown in normal operative position. I

i Fig. 2 is a view similar to Fig. 1 with the parts shown in the position assumed when the loom is stopped.

The side frame 1 of the 100m is provided with the usual breast beam 2 carrying the bracket 3 to which is bolted or otherwise secured the hollow box-like temple stand 4. The temple comprises a shank 5 and ahead 6 extending transversely of'the rearward end of the shank. The shank 5 is mounted to re ciprocate rearwardly .and forwardly in the stand4 and is normally projected rearward- 1y by the usual spring '7 abutting the stand at its forward end and a shoulder on the shank at its rearward end. The temple is provided with the ,usual depending hejel 8 struckby the lay at each beatup to move the temple forward slightly and prevent injury to the reed.

The thread cutting mechanism here illustrated is of a familiar type and comprises a movable cutter blade 9 mounted to slide forwardly and rearwardly in a slot in the temple head, provided at its rearward end with a hook-shaped blade portion 10 cooperating with the usual fixed blade in the temple head and provided at its forward end with a de- This movable cutter blade 3 pending heel 11. 9 is normally projected rearwardly by a spring 12 of the usual type and isfgivenits forwardv rocking and cutting movement by the engagement of the lay-on the beat-up with the depending heel 11.- a

Suitable means are provided for starting and stopping the loom. either automatically or by' hand.

The only element necessary to.

illustrate in connection with the starting'anol 1 stopping of the loom the usual shipper lever 13 pivoted at 14 at the far side of the loom and adapted to swing from the normal forward running position shown in Fig. 1 to a stopping position shown in Fig. 2. This shipper lever element, when the loom is running, stands in the forward position shown in Fig. land whenthe loom is stoppedit is swung to the rearward position shown in When the loom is started, this ele- But any element movable between two positions for running and stopping'the loom may be employed in connectionwith the present invention.

In the preferred form of this invention ion per lever 13 and consequently when the loom is started and this element returns to starting position, the movable cutter member is permitted to resume its normal function.

A preferred form of the invention is shown embodied in a finger 15 extending behind a stud or projection 16 which extends laterally from the movable cutter member and which may be, as shown, the usual stud or an extension thereof 'with which the spring 12 is connected. This finger 15 is connected to or forms a part of an upwardly and forwardly extending shank 17 mounted to slide rearwardly and forwardly on the temple. For this purpose the shank is shown as mounted and guided in bearings 18 secured to and projecting laterally from the temple stand at.

A bellcrank controller lever comprising a shaft 19 and arms 20 and 21 is suitably fulcrumed in brackets 22 secured to the loom frame. The arm 21 extends upwardly in the path of the shipper lever 13 and is engaged by a spring 23 acting to swing the bell crank lever rearwardly. The arm 20 extends upwardly in front of the lower arm 24 of a transmitter lever fulcrumed at 25 on a bracket 26 on-the breast beam 2. The other arm 27 of the transmitter lever extends upwardly alongside the shank 17 and has its upper end forked at 28 and straddling a projection 29 extending laterally from a collar 30 adjustably secured by means of a set screw 31 to the shank 17 The parts are so arranged that when the loom'is running and the shipper lever 13 is consequently in its forward running position, as shown in Fig. 1, the arm 21 is swung forwardly by the shipper lever against the tension of the spring 23 and through the arm 20, transmitter lever 24-, 2?, projection 29 and shank 17 holds the finger 15 directly behind the stud 16. In this position the cutter member is free to function in its usual manner and will act to cut any filling ends brought within its field when the lay beats up against the heel 11. When, however, the loom is stopped and consequently the shipper lever 13 is swung to its rearward position, the bell crank lever comprising the arm 20 and 21 rocks rearwardly under the action of the spring 23, in turn rocking the transmitter lever 24;, 27 in the opposite direction and sliding the shank 17 forwardly in its bearings and causing the finger 15 to engage the projection 16 and drawing the "position under the excess in power of the spring 23 over that of the spring 12.

With the loom stopped and the parts in this position, as shown in Fig. 2, if the operative moves the lay forwardly and the 1 lay strikes against the'heel 11 of the movable c-uttermember, no movement, relatively to the temple head, will be given to the movable cutter member which is already in its extreme forward position, but the lay will also strike against the heel 8 of the temple and the entire temple will move forwardly with the movable cutter member remaining in inoperative position. Consequently it is impossible for the running filling to be out while the loom is stopped as the result of any movement of the lay forwardly' and rearwardly. Not until the loom is started again and the shipper lever 13 swung to its forward or starting position, shown in Fig.

1, is the finger 15 brought rearward to its normal position and the cutting mechanism permitted to function.

There is thus provided a very simple, ef-

fective and eflicient means for preventing the thread cutting mechanism from functioning when the loom is stopped. Thus there is no danger of the running filling being severed and mispicks or imperfections in the weaving of the cloth occurring.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is:

1. In a loom, a temple provided with filling cutting mechanism including a cutter member normally projected rearwardly of the temple head, and means acting upon the stopping of the loom to move the cutter member forwardly to a position to prevent it from engaging thefilling.

2. In a loom, a temple provided with filling cutting mechanism including a cutter member normally projected rearwardly of the temple head, an element havin a running and a stopping positionanc moved from the former to the latter position when the loom is stopped and from the latter to the former position when the loom is started, and means controlled by the said element acting, when the loom is stopped, to move the cutter member forwardly to a position to prevent it from engaging the filling and acting to permit it to function normally when the loom is started. I

3. In a loom, a temple provided with fill- 111g cutting mechanism including a cutter member normally projected rearwardly of the temple head and having a lateral proection, a finger normally standing at the rear of the said projection, and means acting upon the stopping of the loom to move the finger forwardly and move the movable cutter member to a forward inoperative position and thus prevent it from engaging the filling and acting when the loom is started to return the finger to normal positionand permit the functioning of the cutting mechanism.

4:. In a loom, a shipper lever movable from a running position to a stopping position and vice versa to stop and start respectively the loom, a temple provided with filling'cutting mechanism including a cutter member normally projected rearwardly of the temple head and having a lateral projection, a forwardly and rearwardly movable finger normally standing at the rear of the said lateralproj-ection, and a controller lever and means for rocking it coincidently with the movement of the shipper lever, and means operated by the controller lever acting upon the movement of the shipper lever to stopping position to move the finger forwardly to carry the movable cutter member to a position where it cannot engage the filling and acting upon themovement. of the shipper lever to running position to move the finger to normal position and permit the functioning of the cutting mechanism.

5. In a loom, a shipper lever movable from a running position to a stopping position, and vice versa, to stop and start respectively the loom, a temple provided with filling cutting mechanism including a movable cutter member normally projected rearwardly of the head and having a lateral projection,

a finger having a shank mounted to slide'forwardly and rearwardly on the temple, the

said finger normally standing at the rear of to cause the controller lever to follow the shipper lever whereby, when the shipper lever is moved to stopping position, the movable cutter member will be moved to for- 'ward inoperative position and when the shipper lever is moved'to starting position, the movable cutter member will be returned to its normal position.

6. In a loom, a temple provided with filling cutting mechanism including a cutter member having a; lateral projection and mounted in the temple head and movable from a position projecting rearwardly of the temple head forwardly to cut the filling, a shank mounted to slide forwardly and rearwardly on the temple and provided with a finger standing at the rear of the said lateral projection, a shipper lever for stopping and starting the loom, and means controlled by the shipper lever acting when the loom is stopped to project the finger and shank forwardly to carry the cutter member to a position where it it cannot engage the filling and acting when the loom is started to return the filling shank and cutter member to normal position.

In testimony whereof, I have signed my name to this specification.

MELVIN L. STONE. 

